Tire bead



April s, 192s. mao'zo R. C. PIERCE TIRE BEADl Filed Feb. 19. i923 'Paar-las Apr. s, 192e uNiTEo AIIR'DIBIIRT PIERCE, OFBLLEVILLE, NEW MENTS, T AMERICAN CHAIN COMPANY,

rar-altr ermee JERSEY, ASSIGNOR, BY MESNESSIGN IN Gi, A CGRPORATIQN 0F NEW YET nenn.

Application lled February 19p, 1923. Serial No. 6119,83@

e provide a woven inextensible reinforcement l0 bead are inextensible and that will'extend into all the angles of a tire bead, such as the substantmlly rrght-angled triangular bead used in the manufacture of straight-side tires, so that all. parts or the uniformly reinforced. n o

A specilic purpose of my invention 1s to provide an annular reinforcement for lstraighbside beads that may be formed from a single strip of woven wlre tape adapted to be wound convolutely into the form of an annulus to produce a reinforcement having the cross-sectional form of a right-.angled triangle, which is especially adaptable for 0 use 'in ythe preparation of tire beads of the nying drawings. i

' my method of weaving two ty efdescrihed. e

ilhe foregoing together with other objects and advantagesmay be obtained through Hthe practice set forth in detail ign the following description and illustrated 1n the accompan the drawings: o .n b Fig. l isa diagrammatic View lllustrating lengths of my 80 wire tape side by side and from a plurality of parallelwarp wires;

till

Fig. 2 is a plan view, partly broken away, of one of the lengths of tape y obtamed through ther practice of my method;

Fig. 3 is an elevational view, partly'm section. showing a bead for straight-side tirs with my reinforcement incorporated therein; and

Fig. d is an enlarged transverse sectional view taken on the line 4 4 oil Fig., 3,

.ln the drawings, the numeral l designates a straight-side bead ring of standard iorm, tha'tis to say it is substantiallya rightangled triangle in cross-section, and 2 shows my annular wire reinforcement incorporated therein.

It will be. noted that the reinforcementc is constructed fromy a single strip oli woven wlre and conforms in cross-section to the shape of the bead ring l.. It comprises a horizontal base A, a vertical side B., and an oblique side C, vso that 'when it is incorporated in the bead ring it projects into each` angle thereof..

Heretotore it has been impossible to conl greatest'number struct such a reinforcement of woven Wire9 so far as ll vam aware, because it has been impractical.- to form a triangular structure from such material. lvly invention affords a simple Aand practical solution of this prob -,lem through the following practice.

l construct a continuous Hat tape d et woven warp wires lland' a-weftwire 5, and step oil or odset one edge of the strip at intervals to provide successively narrower lengths 6 in the strip corresponding in numberto the number ot convolutions desired in the reinforcement l' obtainthis stepped Iformation of one edge of the' tapeby drop ping ofi one or more warp wires d at intervals during the weaving yoperation and at one side of the strip. This procedure leaves a straight edge 8 upon one side ot the strip and a notched edge 9 at the other sidef The widest portion of each unit comprises the of warp wires 4 and forms the base oi the reinforcementn The number of wires in this length is determined bythe width of the base oit the bead ring 1 and also the gage of the wires 4. The tape thus produced 1s wound convolutely with its straight edge 8' forming the vertical side E of the reinforcement to provide a series of superposed layers ld From the widest of the lengths 6, warp wires d are dropped trom each succeeding length to obtain the proper inclination of the oblique side G or the reinforcement. The, number of warp wires ddropped from each succeeding length is, et course, determined by the height to which it is desired to build the reinforcement and this is determined by the character of the bead rin which frequently verles in height in di erent types e drawings two 95,;

and sizes of tires. ln th warp wires d are dropped from each length, but this Yis illustrative only. The Wires 4 are preferably drawn steel 'wire and the weft wire 5 is relatively smallen'although Wire` oi other forms and proportions may be utilized. Obviously a lesser numberof layers may be utilized than that necessary to complete the triangle if it is desired to merely reinforce the base portion of a bead and an unequal number of wires d may be dropped from the lengths 6 to alter the contour of the inside face of the reinforcement, all within the spirit of my invention.

In forming my novel tape or strip 3, 'll propose -to use a method by which'two strips till) of tape may be woven side by side from a common series of warp wires 4. Two weft wires are woven, preferably simultane-v ously, through these wires 4, as shown in Fig. 1 of the drawing,` to produce two strips and 11. The wires 5 are first'wovenvinto the wires 4 so that the widest length of one strip 10 and the narrowest length of the other stri `11 are side by side, as shown at 12 an 13 respectively.

A lengths of the strips are woven, the desired number of wires are droppedat intervals by 'the weft wire 5 of strip 10 and are picked up by the wire 5 of the strip 11 until a narrow and wide length have been woven at the opposite endfof the strips-10.'and 11. At this point the weft wire 5 of the strip 10 picks .up all the wires dropped from said strip, which brings the weaving operation back to the starting point above described. It will be noted that through this method two strips are reversely woven side by side to produce successively narrower lengths in one strip and .successively wider lengths in the other, and the weaving of both strlps 1s -accomplished simultaneously withthe same the invention, and the` present disclosure is intended to comrehend all changes and modifications wit in the scope of the appended claims. y

The method disclosed herein is claimed in my application Serial No. 75,536, filed Dec.

15, 1925, as a division of this application.

What I claim is:V

1. An annular reinforcement for tire beadV rings, comprising superposed layers of woven wire tape decreasing in width outwardly of the base of the bead.

2. An annular reinforcement for are, bead rings, comprising su rposed layers o woven wire tape, each ayer being of dlfferent width.

3. An annular reinforcement for tirebead rings, comprising superposed layers of woven wire tape, the layers decreasing suc cessively in width.

4. A reinforcement for tire beads, comprising an annulus ,of triangular form in cross-section constructed of convolutions of woven wire tape.

5,. A reinforcement for tire beads, comprising an annulus of triangular form in cross-section constructed of superposed lay- As succeeding a rig f Afrom the base of the bead.

neeaom ers of woven wire tape, the layers being of successively decreasing width.

- 6.A reinforcement for tire beads, comprising an annulus formingin cross-sectionv a right-angled triangle and constructed of woven wire tape in layers of successively decreasing width.

A reinforcement for tire beads, comprism an annulus forming 1n cross-sect1on t-angled triangle and constructed l throughout of layers of woven wire tape.

8. A reinforcement for tire beads, comprising an annulus of triangular form'ln cross-section constructed. from a continuous;

strip of woven inextensible tape wound into a series of layers.

9. A reinforcement for tire bead rings,

comprising an annulusy of triangular form in l cross-section formed from a continuous strip of flat wire tape.

10. A reinforcement fontire bead rings, comprising an annulus of triangular form in cross-section formed from a continuous strip of fiat wire tape wound into a series of superposed layers.

11. A reinforcement for tire bead rings, comprising anannulus having in cross-section the form of'a righ`tangled`triangle and constructed from a continuous strip of flat wire tape wound into a series of layers.

12. A reinforcement for tire head rings, comprising an annulus of triangular form in cross-section -formed from a continuous stri of woven wire tape wound into a series of ayers.

13. A reinforcement for;tire bead rings, comprising an annulus formed from a/continuous strip of woven wire tape adapted to be wound in superposed layers to shape the annulus-in crossfsection into the form of a triangle. 'E

14. A reinforcement for tire bead rings,

comprising an annulus formed -from a continuous strip of woven inextensible tape4 adapted to be wound into a series of layers to shape the annulus in cross-section Into the form of a ri ht-angled triangle.

15. gAs an article of manufacture, a woven inextensible tape foruse in reinforcin ltire beads and" com rising a series of lengts of different widt s decreasing progressively 16. As an article of manufacture, 4a woven wire tape for use in reinforcing tire beads and'comprsin a series of lengths decreasing in. width y regular steps toward the apex of the bead.

17 As an article of manufacture, a woven wire tape adapted to be convolutely wound to form an annulus, said ta e comprising a series of lengths corresponding to the number of convolutionsinto which it is to be wound, each length being of different width. 18. As an article of manufacture, a woven wire tape for use in reinforcing tire beads' no comprising a series of lengths of different widths and having a straight edge at one side of the tape.

19. As an article of manufacture, a woven wire tape having parallel warp wires and comprising a series of lengths, each length embodying a dilel'ent number of warp wires.

20. As an article of manufacture, a woven wire .tape having'parallel warp wires and comprising a series of lengths,` each succeeding length embodying a smaller number of warp wires.

2l. As an article of manufacture, a woven wire tape having parallel warp wires and l5 22. As an article of manufacture, a Woven 2@ wire tape having parallel warp threads, said tape having a straight edge and a notched edge to forni a series of lengths of relatively different widths.

ROBERT e. PIERCE. 

